The benchmark Shanghai Composite Index went up 0.4 percent to close at 2,702.3 points while the Shenzhen Component Index closed 0.02 percent lower at 8,322.36 points.

Combined turnover at the two bourses stood at 272 billion yuan (about 40 billion U.S. dollars), up from 249.52 billion yuan the previous trading day.

The benchmark Shanghai index jumped more than 1 percent in morning trading, before a sudden slump in technology stocks dragged the index down to the negative territory minutes before market close at midday.